From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: [v2] USB: serial: ftdi_sio: Use rounding instead of truncating when calculating baud rate divisors. From: Nikolaj Fogh Message-Id: <9ae5dc49-bb82-911e-8481-7e127d953845@gmail.com> Date: Thu, 22 Nov 2018 21:27:46 +0100 To: Johan Hovold Cc: linux-usb@vger.kernel.org List-ID: SW1wcm92ZSBiYXVkLXJhdGUgZ2VuZXJhdGlvbiBieSB1c2luZyByb3VuZGluZy10by1jbG9zZXN0 IGluc3RlYWQgb2YKdHJ1bmNhdGlvbiBpbiBkaXZpc29yIGNhbGN1bGF0aW9uLgoKUmVzdWx0cyBo YXZlIGJlZW4gdmVyaWZpZWQgYnkgbG9naWMgYW5hbHl6ZXIgb24gYW4gRlQyMzJSVCAoMjMyQk0p IGNoaXAuClRoZSBmb2xsb3dpbmcgdGFibGUgc2hvd3MgdGhlIHdhbnRlZCBiYXVkIHJhdGUsIHRo ZSBiYXVkIHJhdGUgb2J0YWluZWQKd2l0aCB0aGUgb2xkIG1ldGhvZCAodHJ1bmNhdGlvbiksIHdp dGggdGhlIG5ldyBtZXRob2QgKHJvdW5kaW5nKSBhbmQgdGhlCmJhdWQgcmF0ZSBnZW5lcmF0ZWQg YnkgdGhlIHdpbmRvd3MgMTAgZHJpdmVyLiBUaGUgbnVtYmVycyBpbiBwYXJlbnRoZXNlcwppcyB0 aGUgZXJyb3IuCgorLSBXYW50ZWQgLS0rLS0tLS0tIE9sZCAtLS0tLS0tKy0tLS0tLSBOZXcgLS0t LS0tLSstLS0tLS0gV2luIC0tLS0tLS0rCnwgwqAgOTYwMMKgIMKgIHwgwqAgOTYwMMKgICgwLjAw JSnCoCB8wqDCoCA5NjA0wqAgKDAuMDUlKcKgIHzCoMKgIDk2MDUgKDAuMDUlKcKgIHwKfCDCoCAx OTIwMCDCoCB8IMKgIDE5MjAwICgwLjAwJSnCoCB8wqDCoCAxOTE5OSAoMC4wMSUpwqAgfMKgwqAg MTkxOTggKDAuMDElKcKgIHwKfCDCoCAzODQwMCDCoCB8IMKgIDM4Mzk1ICgwLjAxJSnCoCB8wqDC oCAzODQzMSAoMC4wOCUpwqAgfMKgwqAgMzgzOTQgKDAuMDIlKcKgIHwKfCDCoCA1NzYwMCDCoCB8 IMKgIDU3NzI1ICgwLjIyJSnCoCB8wqDCoCA1NzU0MCAoMC4xMCUpwqAgfMKgwqAgNTc2NzMgKDAu MTMlKcKgIHwKfMKgIDExNTIwMCDCoCB8wqAgMTE1MzA3ICgwLjA5JSnCoCB8wqAgMTE1MzMwICgw LjExJSnCoCB8wqAgMTE1MzIwICgwLjEwJSnCoCB8CnzCoCA5MjE2MDAgwqAgfMKgIDkxOTk2MyAo MC4xOCUpwqAgfMKgIDkyMDM4NiAoMC4xMyUpwqAgfMKgIDkyMDgxMCAoMC4wOSUpwqAgfAp8wqAg OTYxMjAwIMKgIHzCoCA5OTY1MTIgKDMuNjclKcKgIHzCoCA5NTY0ODAgKDAuNDklKcKgIHzCoCA5 NTY5MzcgKDAuNDQlKcKgIHwKKy0tLS0tLS0tLS0tKy0tLS0tLS0tLS0tLS0tLS0tLSstLS0tLS0t LS0tLS0tLS0tLS0rLS0tLS0tLS0tLS0tLS0tLS0tKwoKVGhlIGVycm9yIGR1ZSB0byBub2lzZSBp biB0aGUgbWVhc3VyZW1lbnRzIGlzIGluIHRoZSBvcmRlciBvZiBhIGZldwp0ZW50aHMgb2YgYSAl LiBBcyBjYW4gYmUgc2VlbiwgdGhlIGJhdWQgcmF0ZSBmb3IgOTYxMjAwIGlzIHNpZ25pZmljYW50 bHkKaW1wcm92ZWQgZm9yIHNvbWUgcmF0ZXMsIGFuZCBjb3JyZXNwb25kcyB0byB0aGUgb3V0cHV0 IGdpdmVuIGJ5IHRoZQp3aW5kb3dzIGRyaXZlci4KClRoZSB0aGVvcmV0aWNhbCBiYXVkIHJhdGUg aGFzIGJlZW4gY2FsY3VsYXRlZCBmb3IgYWxsIGJhdWQgcmF0ZXMgZnJvbSAxCnRvIDNNLCBhbmQg YXMgZXhwZWN0ZWQsIHRoZSBlcnJvciBpcyBjZW50ZXJlZCBhcm91bmQgMCwgd2l0aCBhIHRyaWFu Z2xlCnNoYXBlIGluc3RlYWQgb2YgYSBzYXd0b290aCwgc28gdGhlIG1heGltdW0gZXJyb3IgaXMg ZGVjcmVhc2VkIHRvIGhhbGYuCgpTaWduZWQtb2ZmLWJ5OiBOaWtvbGFqIEZvZ2ggPG5pa29sYWpm b2doQGdtYWlsLmNvbT4KLS0tCiDCoGRyaXZlcnMvdXNiL3NlcmlhbC9mdGRpX3Npby5jIHwgNiAr KystLS0KIMKgMSBmaWxlIGNoYW5nZWQsIDMgaW5zZXJ0aW9ucygrKSwgMyBkZWxldGlvbnMoLSkK CiDCoMKgwqDCoCBkaXZpc29yID0gZGl2aXNvcjMgPj4gMzsKQEAgLTExNTYsNyArMTE1Niw3IEBA IHN0YXRpYyB1MzIgZnRkaV8yMzJibV9iYXVkX2Jhc2VfdG9fZGl2aXNvcihpbnQgCmJhdWQsIGlu dCBiYXNlKQogwqDCoMKgwqAgc3RhdGljIGNvbnN0IHVuc2lnbmVkIGNoYXIgZGl2ZnJhY1s4XSA9 IHsgMCwgMywgMiwgNCwgMSwgNSwgNiwgNyB9OwogwqDCoMKgwqAgdTMyIGRpdmlzb3I7CiDCoMKg wqDCoCAvKiBkaXZpc29yIHNoaWZ0ZWQgMyBiaXRzIHRvIHRoZSBsZWZ0ICovCi3CoMKgwqAgaW50 IGRpdmlzb3IzID0gYmFzZSAvIDIgLyBiYXVkOworwqDCoMKgIGludCBkaXZpc29yMyA9IERJVl9S T1VORF9DTE9TRVNUKGJhc2UsIDIgKiBiYXVkKTsKIMKgwqDCoMKgIGRpdmlzb3IgPSBkaXZpc29y MyA+PiAzOwogwqDCoMKgwqAgZGl2aXNvciB8PSAodTMyKWRpdmZyYWNbZGl2aXNvcjMgJiAweDdd IDw8IDE0OwogwqDCoMKgwqAgLyogRGVhbCB3aXRoIHNwZWNpYWwgY2FzZXMgZm9yIGhpZ2hlc3Qg YmF1ZCByYXRlcy4gKi8KQEAgLTExNzksNyArMTE3OSw3IEBAIHN0YXRpYyB1MzIgZnRkaV8yMjMy aF9iYXVkX2Jhc2VfdG9fZGl2aXNvcihpbnQgCmJhdWQsIGludCBiYXNlKQogwqDCoMKgwqAgaW50 IGRpdmlzb3IzOwoKIMKgwqDCoMKgIC8qIGhpLXNwZWVkIGJhdWQgcmF0ZSBpcyAxMC1iaXQgc2Ft cGxpbmcgaW5zdGVhZCBvZiAxNi1iaXQgKi8KLcKgwqDCoCBkaXZpc29yMyA9IGJhc2UgKiA4IC8g KGJhdWQgKiAxMCk7CivCoMKgwqAgZGl2aXNvcjMgPSBESVZfUk9VTkRfQ0xPU0VTVChiYXNlICog OCwgYmF1ZCAqIDEwKTsKCiDCoMKgwqDCoCBkaXZpc29yID0gZGl2aXNvcjMgPj4gMzsKIMKgwqDC oMKgIGRpdmlzb3IgfD0gKHUzMilkaXZmcmFjW2Rpdmlzb3IzICYgMHg3XSA8PCAxNDsKCmRpZmYg LS1naXQgYS9kcml2ZXJzL3VzYi9zZXJpYWwvZnRkaV9zaW8uYyBiL2RyaXZlcnMvdXNiL3Nlcmlh bC9mdGRpX3Npby5jCmluZGV4IDYwOTE5OGQ5NTk0Yy4uMGVkYmQzNDI3NTQ4IDEwMDY0NAotLS0g YS9kcml2ZXJzL3VzYi9zZXJpYWwvZnRkaV9zaW8uYworKysgYi9kcml2ZXJzL3VzYi9zZXJpYWwv ZnRkaV9zaW8uYwpAQCAtMTEzMCw3ICsxMTMwLDcgQEAgc3RhdGljIHVuc2lnbmVkIHNob3J0IGlu dCAKZnRkaV8yMzJhbV9iYXVkX2Jhc2VfdG9fZGl2aXNvcihpbnQgYmF1ZCwgaW50IGJhc2UpCiDC oHsKIMKgwqDCoMKgIHVuc2lnbmVkIHNob3J0IGludCBkaXZpc29yOwogwqDCoMKgwqAgLyogZGl2 aXNvciBzaGlmdGVkIDMgYml0cyB0byB0aGUgbGVmdCAqLwotwqDCoMKgIGludCBkaXZpc29yMyA9 IGJhc2UgLyAyIC8gYmF1ZDsKK8KgwqDCoCBpbnQgZGl2aXNvcjMgPSBESVZfUk9VTkRfQ0xPU0VT VChiYXNlLCAyICogYmF1ZCk7CiDCoMKgwqDCoCBpZiAoKGRpdmlzb3IzICYgMHg3KSA9PSA3KQog wqDCoMKgwqAgwqDCoMKgIGRpdmlzb3IzKys7IC8qIHJvdW5kIHguNy84IHVwIHRvIHgrMSAqLwo=